Panel



FIG. 1 is a side view of the panel showing our new design;

FIG. 2 is an opposite side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a front perspective view. 

The ornamental design for a panel, as shown and described. 